CN2184121Y

CN2184121Y - Magnetic seal

Info

Publication number: CN2184121Y
Application number: CN 93226475
Authority: CN
Inventors: 吴宣
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-25
Filing date: 1993-10-25
Publication date: 1994-11-30
Anticipated expiration: 2003-10-25

Abstract

The utility model relates to a magnetic force sealing device which is used for the sealing and the stir of enameled reaction pots in the chemical industry and is composed of a piston, a sealing ring I, a sealing ring II, a spring, a water jacket, an oil scale part, a supporting body, a magnet, a magnetic conducting ring, a driving shaft, a cooling part, magnetic fluid, etc. With the piston and the oil scale part, gases in reaction pots are prevented from discharge. With the magnetic conducting ring, the magnet and the magnetic fluid, pressure oil can be prevented from discharge. With the water jacket and the cooling part, the working temperature of the sealing device is decreased. With a simple structure, the manufacturing cost is reduced.

Description

Magnetic seal

The utility model is a kind of magnetic seal device that the sealing of chemical industry enamel reaction pot is stirred that is used for.

Relevant by retrieval document does not retrieve the magnetic seal device identical with the utility model structure at present as yet.Existing chemical industry is released in reaction pot for preventing harmful corrosion air-flow in utilization enamel reaction pot production process, mainly adopts methods such as packing seal, mechanical seal, magnet fluid sealing, magnetic drives to solve this problem.Packing seal mainly adds suitable filler and seals between transmission shaft and supporting mass.Because the reaction pot internal pressure is very high in the production process, gas can be lost in the air along leaking out in the gap between axle and the filler after reaching certain pressure; Mechanical seal mainly adopts the surface groove that matches to play sealing effect.Owing to exist certain clearance between the groove, add in use for some time, because mechanical abrasion increases the gap, and etchant gas is leaked; Magnet fluid sealing is to utilize rare earth permanent-magnetic material, between magnetic guiding loop and transmission shaft, fill up magnetic fluid, under the effect of magnetic force, making magnetic fluid form one tightly has transmission shaft in arms and does not have the suspension sealing layer of any frictional force with transmission shaft, thereby can stop interior gas of reaction pot or liquid to pass through, reach the sealing under the certain pressure.Because corrosivity is very strong sometimes for liquid in the reaction pot or gas, corrosion thing in the reaction pot and transmission shaft and magnetic fluid react corrosion, and the sealability of magnetic fluid is descended, and because reaction pot usually is in heated condition, after temperature reaches certain state, the magnetic property of rare earth permanent magnet can obviously descend, thereby does not have sealing effect; Magnetic driver is by seal closure the inside and outside chamber of reaction pot to be separated, and drive the transmission of inner chamber magnet by the exocoel rare-earth permanent magnet, and makes reaction pot stirring work." slow-speed of revolution, big moment magnetic drive device " patent No. " 91213763.0 " of existing utilization, though can solve the transmission seal problem of reaction pot, and since complex structure, the manufacture cost height, and the popularization of product is subjected to certain restriction.So solve the hard nut to crack that reaction pot pot mouth sealing problem always is chemical industry, medicine, agricultural chemicals, dye industry.

The purpose of this utility model is to provide a kind of enamel reaction pot that is applicable to have pressure conversion, cooling, simple in structure, safe and reliable magnetic seal device.

Technical characteristics of the present utility model is: considering under pressure conversion, the reliable sealing situation, be designed to constitute, it is characterized in that: on pot mouth seal ring I, be provided with pot mouthful seal ring II by lower end cap, sliding bearing, piston, seal ring I, seal ring II, pot mouthful seal ring I, pot mouthful seal ring II, spring, water jacket, seal ring III, oil ga(u)ge parts, bearing, supporting mass, magnetic shield, magnet, seal ring IV, magnetic guiding loop, packing ring, seal ring V, oil sealing, loam cake, transmission shaft, pressure index parts, cooling-part, magnetic fluid, rolling bearing assembling; On pot mouth seal ring I, pot mouthful seal ring II, be provided with supporting mass; On the supporting mass endoporus, be provided with water jacket, magnetic shield; At the transmission shaft external diameter, be provided with piston in the water jacket endoporus; On piston, be provided with seal ring I, seal ring II; At the transmission shaft external diameter, be provided with spring between water jacket and the piston; On the endoporus of magnetic shield, be provided with the magnetic guiding loop that matches with transmission shaft; Between adjacent two magnetic guiding loops, be provided with magnet; Between magnetic guiding loop and transmission shaft, be provided with magnetic fluid; On supporting mass, be provided with oil ga(u)ge parts, cooling-part, pressure indicating device.

When integral body is packed in by bolt on the reaction pot pot mouth, react when stirring, owing to be in high temperature mesolow state in the reaction pot, poisonous corrosive gas upwards releases along the gap between lower end cap and the transmission shaft in the pot, gas continues up by the gap between oil sealing, sliding bearing and the transmission shaft in the lower end cap, and contacts with piston.Owing to be provided with two seals circle II between piston and the transmission shaft, be provided with the seal ring I between piston and the water jacket inwall, to promote piston from the gas that leaks out between sliding bearing and the transmission shaft moves up, owing to fill with pressure oil in the cavity that forms between transmission shaft and the water jacket, and link to each other with the oil ga(u)ge parts, so when moving on the piston, make the pressure oil in the cavity produce pressure, the size of pressure equates with the pressure of gas to piston action.Because the gas pressure that acts on the piston equates the leakage so gas can't make progress by the pressure oil in piston and the cavity with oil pressure in the cavity.The magnetic fluid that is provided with between transmission shaft and magnetic guiding loop designs for preventing that pressure oil from leaking, after producing pressure under the effect of the pressure oil in the cavity at piston, partial pressure oil will be along the clearance leakage between transmission shaft and the water jacket to bearing, and passes bearing and contact with magnetic guiding loop, magnetic fluid.Because magnetic guiding loop produces magnetic under the effect of magnet, to the magnetic fluid effect, make magnetic fluid be adsorbed on the transmission shaft surface, and stop pressure oil to pass through.For preventing that pressure oil from producing leakage when pressure is higher, adopt several magnetic guiding loop to add magnetic fluid and seal.The pressure of pressure oil is shown by the pressure indicating device.The cooling-part that is provided with on supporting mass links to each other with circulation cooling bath in the water jacket, by cooling liquid pressure oil, water jacket, supporting mass etc. are cooled off, thus make the utility model realized in, can prevent the leakage of harmful corrosive gas under the low-pressure state safely and reliably.The last axle head of transmission shaft links to each other with retarder, and lower shaft end and stirring shaft join.

The utility model has the advantages that:, thereby stoped releasing of gas in the reaction pot on the whole owing to be provided with piston, oil ga(u)ge parts; Owing to be provided with magnetic guiding loop, magnet, magnetic fluid, thereby stoped releasing of pressure oil, guaranteed that transmission shaft turns round under the effect of not having leakage, the friction of no sealer; Owing to be provided with water jacket, cooling-part, thereby reduced the operating temperature of sealer, guaranteed the reliability of sealing; Because simple in structure, manufacturing, easy to maintenance, thereby greatly reduce the manufacture cost of equipment, so very big practical and popularizing value is arranged.

Below with reference to description of drawings embodiment of the present utility model:

Accompanying drawing 1 is the overall structure schematic representation of the utility model magnetic seal device.

Accompanying drawing 2 is structure of piston schematic representation of magnetic seal device.

Accompanying drawing 3 is structural representations of the water jacket of magnetic seal device.

With reference to accompanying drawing 1, on transmission shaft ［ 22 ］, be provided with sliding bearing ［ 2 ］, piston ［ 3 ］, spring ［ 8 ］, bearing ［ 12 ］, liquid bearing ［ 26 ］.Seal ring I ［ 4 ］, seal ring II ［ 5 ］ are housed on piston ［ 3 ］.On supporting mass ［ 13 ］, be provided with water jacket ［ 9 ］, magnetic shield ［ 14 ］.On water jacket ［ 9 ］, be set with two seal ring III ［ 10 ］.On magnetic shield ［ 14 ］, be set with two seal ring V ［ 19 ］.With bolt lower end cap ［ 1 ］ is packed on the supporting mass ［ 13 ］.Seal with oil sealing between lower end cap ［ 1 ］ and the transmission shaft ［ 22 ］, seal with sealing gasket between supporting mass ［ 13 ］ and the lower end cap ［ 1 ］.In magnetic shield ［ 14 ］, be provided with several magnetic guiding loops ［ 17 ］.Between adjacent two magnetic guiding loops ［ 17 ］, be provided with magnet ［ 15 ］.On every magnetic guiding loop ［ 17 ］, be provided with seal ring IV ［ 16 ］.Between magnetic guiding loop ［ 17 ］ and transmission shaft ［ 22 ］, be provided with magnetic fluid ［ 25 ］.Between magnetic guiding loop ［ 17 ］ and rolling bearing ［ 26 ］, be provided with packing ring ［ 18 ］.Upper end at supporting mass ［ 13 ］ compresses loam cake ［ 21 ］, rolling bearing ［ 26 ］, packing ring ［ 18 ］, magnetic guiding loop ［ 17 ］, magnet ［ 15 ］ with bolt.Seal with oil sealing ［ 20 ］ between loam cake ［ 21 ］ and the transmission shaft ［ 22 ］.On supporting mass ［ 13 ］, be provided with oil ga(u)ge parts ［ 11 ］, pressure indicating device ［ 23 ］, cooling-part ［ 24 ］.The solid welding of pot mouthful seal ring II ［ 7 ］ and is packed on the pot mouthful seal ring I ［ 6 ］ with bolt on supporting mass ［ 13 ］.A pot mouthful seal ring I ［ 6 ］ is packed on the reaction pot pot mouth with bolt.

With reference to accompanying drawing 2, on the internal diameter of piston ［ 3 ］, be provided with the two seals groove, outer garden is provided with sealed groove one.

With reference to accompanying drawing 3, on the external diameter of water jacket ［ 9 ］, be provided with several cooling bath capable of circulation.

Claims

1, a kind of magnetic seal device is by lower end cap [1], sliding bearing [2], piston [3], seal ring I [4], seal ring II [5], pot mouthful seal ring I [6], pot mouthful seal ring II [7], spring [8], water jacket [9], seal ring III [10], oil ga(u)ge parts [11], bearing [12], supporting mass [13], magnetic shield [14], magnet [15], seal ring IV [16], magnetic guiding loop [17], packing ring [18], seal ring V [19], oil sealing [20], loam cake [21], transmission shaft [22], pressure indicating device [23], cooling-part [24], magnetic fluid [25], rolling bearing [26] assembling constitutes, and it is characterized in that: be provided with pot mouthful seal ring II [7] on pot mouth seal ring I [6]; On pot mouth seal ring I [6], pot mouthful seal ring II [7], be provided with supporting mass [13]; On supporting mass [13] endoporus, be provided with water jacket [9], magnetic shield [14]; In transmission shaft [22] external diameter water jacket [9] endoporus, be provided with piston [3]; On piston [3], establish energy seal ring I [4], seal ring II [5]; Between transmission shaft [22] external diameter, water jacket [9] and piston [3], be provided with spring [8]; On the endoporus of magnetic shield [14], be provided with the magnetic guiding loop [17] that matches with transmission shaft [22]; Between adjacent two magnetic guiding loops [17], be provided with magnet [15]; Between magnetic guiding loop [17] and transmission shaft [22], be provided with magnetic fluid [25]; On supporting mass [13], be provided with oil ga(u)ge parts [11], pressure indicating device [23], cooling-part [24].

2, magnetic seal device according to claim 1 is characterized in that: the external diameter of water jacket ［ 9 ］ is provided with several cooling bath capable of circulation.

3, magnetic seal device according to claim 1 is characterized in that: the internal diameter of piston ［ 3 ］ is provided with the two seals groove, outer garden is provided with sealed groove one.